CONSOLIDATED BALANCE SHEETS [Parenthetical] (USD $)	Dec. 31, 2012	Dec. 31, 2011
Redeemable preferred stock, par value (in dollars per share)	$ 0.60	$ 0.60
Redeemable preferred stock, authorized	200,000	200,000
Redeemable preferred stock, issued	30,265	22,427
Redeemable preferred stock, outstanding	30,265	22,427
Class A Common Stock [Member]
Common stock, par value (in dollars per share)	$ 0.60	$ 0.60
Common stock, authorized	24,655,000	24,655,000
Common stock, issued	14,593,011	14,568,696
Common stock, outstanding	14,593,011	14,568,696
Class B Common Stock [Member]
Common stock, par value (in dollars per share)	$ 0.60	$ 0.60
Common stock, authorized	145,000	145,000
Common stock, issued	0	0
Common stock, outstanding	0	0